TWI236293B - Digital set-top box - Google Patents

Digital set-top box Download PDF

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Publication number
TWI236293B
TWI236293B TW092129811A TW92129811A TWI236293B TW I236293 B TWI236293 B TW I236293B TW 092129811 A TW092129811 A TW 092129811A TW 92129811 A TW92129811 A TW 92129811A TW I236293 B TWI236293 B TW I236293B
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TW
Taiwan
Prior art keywords
digital
signal
top box
item
scope
Prior art date
Application number
TW092129811A
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Chinese (zh)
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TW200515816A (en
Inventor
Victor Shih
I-Te Chou
Lieng-Min Fang
Yan-Hua Liao
Yang-Long Lin
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Avermedia Tech Inc
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Publication date
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Priority to TW092129811A priority Critical patent/TWI236293B/en
Priority to US10/714,798 priority patent/US20050114899A1/en
Priority to GB0327411A priority patent/GB2407722B/en
Publication of TW200515816A publication Critical patent/TW200515816A/en
Application granted granted Critical
Publication of TWI236293B publication Critical patent/TWI236293B/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/641—Multi-purpose receivers, e.g. for auxiliary information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4143—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a Personal Computer [PC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/012—Conversion between an interlaced and a progressive signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Television Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

A digital set-top box is disclosed. The digital set-top box includes a demodulator, a demultiplexer, a MPEG-2 decoder, a deinterlace video processor and a microprocessor. The digital set-top box further includes a digital to analog converter. The digital set-top box receives a digital broadcasting signal and converts the digital broadcasting signal into VGA and DVI signal format to be received by a monitor, so as to provide a user to watch images on the monitor.

Description

1236293 玫、發明說明 【發明所屬之技術領域】 本發明是有關於一種數位式機頂盒，且特別是有關於 一種能夠輸出符合電腦螢幕顯示格式的數位式機頂a。 【先前技術】 近來由於液晶顯示器及液晶電視的迅速普及，將電視 訊號轉變成液晶顯示器訊號之技術亦快速發展。目前全球 數位電視相關標準之發展，主要有三大標準，分別為歐洲 廣播聯盟（European Broadcast Union，EBU)所制定的 DVB(Digital Video Broadcasting)、美國的 ATSc(Adv_ed Television Systems Committee)及日本的 ISDB(Integrated Services Digital Broadcasting)。 目前市面上的機頂盒（Set_Top Box)有類比式和數位 式兩種，而能夠輸出VGA格式的只有類比式機頂盒（或稱 電視盒、TV BOX)，但全部的數位式機頂盒只有—般的 CVBS及SCART的輸出’並沒有VGA輸出，所以只能應 用在液a曰電視上。因此，依據目前市面上的數位式機頂 盒，都無法在電腦螢幕上顯示影像訊號。 【發明内容】 本發明的一目的’在於提供一種數位式機頂盒，可將 接收到的數位廣播訊號轉換成電腦螢幕可以接收的訊號 1236293 根據本發明之上述目的，提出一種數位式機頂盒，包 括一解調器、一解多工器、一 MPEG-2解碼器、一去交^ 視訊處理器及一微處理器。解調器接收數位廣播訊號，以 輸出數位資料流。解多工器接收數位資料流，以產生1^數位 影像訊號。MPEG-2解碼器接收數位影像訊號，以產生交 錯式數位影像訊號。去交錯視訊處理器接收交錯式數位影 像訊號，以產生數位RGB訊號，此數位RGB訊號可經Z D VI介面傳送至顯示器中，供使用者在顯示器上觀看影 像。以及，微處理器連接解調器、解多工器、ΜρΕ(}_2ζ 碼器及去交錯視訊處理器，用以傳輸相關資料訊號至各單 元以控制其之操作。 本發明之數位式機頂盒更包括一數位類比轉換器，用 以接收數位RGB訊號，並將此數位RGB訊號轉換成類比 RGB訊號，而此類比RGB訊號可經由vga介面傳送至 顯示器中，供使用者在顯示器上觀看影像。 【實施方式】 以說明。 以下將說明本發明之數位式機頂盒的操作方式，專門 用在接收數位廣播訊號，再將接收到的數位廣播訊換 成電腦螢幕可以接收的訊號格式。此處將以數位廣播U之視 頻訊號為例來說明，音頻訊號係以傳統方法呈現，故不加 頂盒的方 解多工器 請參照第1圖，第丨圖為本發明之數位式機 塊圖。數位式機頂盒丨〇〇包括一解調器1丨〇、— 1236293 ㈣、- MPEG_2解碼器13〇、一去交錯視訊處理器i4〇 及一微處理器150。其中，微處理器15〇連接解調器ιι〇、 解多工器、120、MPEG_2解碼器130及去交錯視訊處理器 140，用以傳輸相關資料訊號至各單元以控制其之操作。 本發明之數位式機頂盒100的操作方式如下。 解調器110接收數位廣播訊號，以輸出一數位資料流 至解多工器120。上述數位廣播訊號包括數位有線廣播訊 號或數位無線廣播訊號，數位有線廣播訊號例如 或ISDB-C，而數位無線廣播訊號例如數位無線地面廣播 汛號DVB-T或ISDB-T、數位無線衛星廣播訊號DVB-S 或 ISDB-S，以及 ATSC。 接著，解多工器i 2〇依據此數位資料流產生數位影像 Λ號。之後，MPEG-2解碼器130依據來自解多工器120 之數位影像訊號，產生一交錯式數位影像訊號。 去父錯視訊處理器14〇依據來自MPEG-2解碼器130 之交錯式數位影像訊號，產生一數位RGB訊號。 若顯示器1 70支援數位視覺介面（dVI Interface)，則 去父錯視訊處理器140可經由DVI介面將數位RGB訊號 直接傳送至顯示器1 7〇，以供使用者在顯示器1 7〇上觀看 影像。若顯示器170不支援DVI介面，則去交錯視訊處 理器140輸出的數位rgb訊號可經由數位類比轉換器160 轉換成類比RGB訊號後，再經由VGA介面送至顯示器 1 7〇 ’以供使用者在顯示器170上觀看影像。其中，顯示 器H0包括陰極射像管顯示器（CRT monitor)或液晶顯示 1236293 器（LCD)。 4上所述’本發明之數位式機頂盒可將接收到的數位 有線廣播訊號或數位無線廣播訊號轉換成顯示器可以接 收的VGA及DVI訊號格式 旦以供使用者在顯不器上觀看 雖然本發明已以較佳實施例揭露如上，然其並非用以 限=發明，任何熟習此技藝者，在不脫離本 和挑圍内’當可作各種之更動與潤飾，因此本發明之= 乾圍當視後附之巾請專利範圍所界定者為準。 圖式簡單說 為讓本發明之上述和1他曰 ls , I、他目的、特徵、和優點能更丨 顯易憧，下文特舉一較佳眚竑办丨 又 寸牛毕又1土 Λ施例，並配合所附圖 細說明如下： V 作； 第1圖為本發明之數位式機頂盒的方塊圖。 【元件代表符號簡單說明】 100 :數位式機頂盒 11 〇 :解調器 120 :解多工器 130 : MPEG_2 解碼器 14〇:去交錯視訊處理器 1 5 0 :微處理器 160 :數位類比轉換器 1236293 170 :顯示器1236293 Description of the invention [Technical field to which the invention belongs] The present invention relates to a digital set-top box, and more particularly to a digital set-top a capable of outputting in accordance with a computer screen display format. [Previous Technology] Recently, due to the rapid popularization of liquid crystal displays and liquid crystal televisions, the technology of transforming television signals into liquid crystal display signals has also developed rapidly. At present, there are three major standards for the development of digital television-related standards in the world. They are DVB (Digital Video Broadcasting) formulated by the European Broadcast Union (EBU), the United States ATSc (Adv_ed Television Systems Committee), and the Japanese ISDB ( Integrated Services Digital Broadcasting). At present, there are two types of set-top boxes in the market: analog and digital. The only ones that can output VGA format are analog set-top boxes (also known as TV boxes and TV BOX), but all digital set-top boxes have only ordinary CVBS and SCART's output does not have a VGA output, so it can only be applied to a TV. Therefore, according to the digital set-top boxes currently on the market, the image signals cannot be displayed on the computer screen. SUMMARY OF THE INVENTION An object of the present invention is to provide a digital set-top box that can convert a received digital broadcast signal into a signal that can be received by a computer screen. 1236293 According to the above object of the present invention, a digital set-top box is provided, which includes a solution. A modulator, a demultiplexer, an MPEG-2 decoder, a video processor and a microprocessor. The demodulator receives a digital broadcast signal to output a digital data stream. The demultiplexer receives a digital data stream to generate a 1 ^ digital image signal. The MPEG-2 decoder receives the digital video signal to generate an interlaced digital video signal. The de-interlaced video processor receives the interlaced digital image signal to generate a digital RGB signal. This digital RGB signal can be transmitted to the display through the Z D VI interface for the user to view the image on the display. And, the microprocessor is connected to a demodulator, a demultiplexer, a ΜρΕ (} _ 2ζ encoder, and a de-interlaced video processor for transmitting related data signals to each unit to control its operation. The digital set-top box of the present invention is more Includes a digital analog converter to receive digital RGB signals and convert the digital RGB signals into analog RGB signals, and such analog RGB signals can be transmitted to the display through the vga interface for users to watch images on the display. Embodiment] To illustrate. The operation mode of the digital set-top box of the present invention will be described below, which is specifically used to receive digital broadcast signals, and then replace the received digital broadcast signals with a signal format that can be received by a computer screen. Here will be digital The video signal of Broadcast U is taken as an example to explain, the audio signal is presented by the traditional method, so please refer to Fig. 1 for the multiplexer without the top box, which is the digital block diagram of the present invention. The set-top box includes a demodulator 1, 1236293,-MPEG_2 decoder 13, a de-interlaced video processor i4, and a microprocessor 150. In the process, the microprocessor 150 is connected to the demodulator ιιο, the demultiplexer 120, the MPEG_2 decoder 130, and the de-interlaced video processor 140, and is used to transmit relevant data signals to each unit to control its operation. The operation of the digital set-top box 100 is as follows. The demodulator 110 receives the digital broadcast signal to output a digital data stream to the demultiplexer 120. The digital broadcast signal includes a digital cable broadcast signal or a digital wireless broadcast signal, and a digital cable broadcast. The signal is, for example, ISDB-C, and the digital wireless broadcast signal is, for example, digital wireless terrestrial broadcast signal DVB-T or ISDB-T, the digital wireless satellite broadcast signal is DVB-S or ISDB-S, and ATSC. Next, the demultiplexer i 2. Generate a digital image Λ number based on the digital data stream. After that, the MPEG-2 decoder 130 generates an interlaced digital image signal based on the digital image signal from the demultiplexer 120. The parent video processor 14 The interleaved digital image signal from the MPEG-2 decoder 130 generates a digital RGB signal. If the display 1 70 supports a digital visual interface (dVI Interface), go to the parent error The video processor 140 can directly transmit digital RGB signals to the display 170 through the DVI interface for users to view images on the display 170. If the display 170 does not support the DVI interface, the de-interlaced video output from the video processor 140 The digital rgb signal can be converted into an analog RGB signal by the digital analog converter 160, and then sent to the display 170 'through the VGA interface for the user to view the image on the display 170. Among them, the display H0 includes a cathode ray tube display ( CRT monitor) or liquid crystal display (1236293 LCD). The digital set-top box of the present invention described above can convert the received digital cable broadcast signal or digital wireless broadcast signal into a VGA and DVI signal format that can be received by the display for users to watch on the display. Although the present invention It has been disclosed in the preferred embodiment as above, but it is not intended to limit = invention. Any person skilled in this art can make various modifications and retouches without departing from the scope and the challenge. Therefore, the invention of the invention = Subject to the attached towel as defined in the patent scope. The diagram simply states that in order to make the above and 1s of the present invention ls, I, his purpose, characteristics, and advantages more obvious, the following is a better way to do it. The embodiments are described in detail with the accompanying drawings as follows: V is made; FIG. 1 is a block diagram of a digital set-top box of the present invention. [Simple description of component representative symbols] 100: digital set-top box 11 〇: demodulator 120: demultiplexer 130: MPEG_2 decoder 14: de-interlaced video processor 1 50: microprocessor 160: digital analog converter 1236293 170: Display

77

Claims (1)

1236293 拾、申請專利範圍 1 · 一種數位式機頂盒，包括·· 一解調器，接收一數位廣播訊號，以輸出一數位資料 流> 一解多工器，接收該數位資料流，以產生一數位影像 訊號； 一 MPEG-2解碼器，接收該數位影像訊號，以產生一 交錯式數位影像訊號； 一去父錯視訊處理器，接收該交錯式數位影像訊號， 以產生一數位RGB訊號，該數位rgB訊號可經由一 dVI 介面傳送至一顯示器中，供一使用者在該顯示器上觀看影 像；以及 一微處理器，連接該解調器、該解多工器、該mpeg_2 料器及該去交錯視訊處理器，用以傳輸相關請訊號至 各單元以控制其之操作。 更 並 比 .2.如中請專利範圍第i項所述之數位式 ， 包括-數位類比轉換器，用以接收該數位咖; 將該數位細訊號轉換成-類比RGB _ 議訊號可經由一 VGA介面傳送至=而該類比 用者在該顯示器上觀看影像。 ·· /、盗中，供該使 I如申請專利範圍第1項所述之數位式機頂盒，其 1236293 中該數位廣播訊號包括數位有線廣播訊號。 乂.如申請專利範圍第4項所述之數位式機頂盒，立 中遠數位無線廣播訊號包括數位無線地面廣播訊號。 ，如申請專利範圍第5項所述之數位式機頂盒，其 中忒數位無線地面廣播訊號包括DVB-T地面廣播。 7·⑹巾請專利範圍第4項所述之數位式機頂盒，豆 该數位無線廣播訊號包括數位無線衛星廣播訊號。八 8·如申請專利範圍第7項所述之數位式機 ， 中该數位無線衛星廣播訊號包括DVB-S衛星廣播二’、 9·如申請專利範圍第4項所述之數位式機，豆 中该數位無線廣播訊號包括ATSC數位廣播。1八1236293 Patent application scope1. A digital set-top box, including a demodulator that receives a digital broadcast signal to output a digital data stream > a demultiplexer that receives the digital data stream to generate a digital data stream A digital video signal; an MPEG-2 decoder receiving the digital video signal to generate an interlaced digital video signal; a parent video processor receiving the interlaced digital video signal to generate a digital RGB signal, the The digital rgB signal can be transmitted to a display through a dVI interface for a user to view the image on the display; and a microprocessor connected to the demodulator, the demultiplexer, the mpeg_2 processor and the processor. Interlaced video processor is used to transmit the relevant request signal to each unit to control its operation. The ratio is 2. The digital type described in item i of the patent scope includes a digital analog converter for receiving the digital coffee; the digital fine signal is converted into an analog RGB signal. The VGA interface sends to = and the analog user views the image on the display. ·· 、 In theft, the digital set-top box as described in item 1 of the scope of patent application, the digital broadcast signal in 1236293 includes digital cable broadcast signal.乂. As for the digital set-top box as described in item 4 of the scope of patent application, the COSCO digital wireless broadcast signals include digital wireless terrestrial broadcast signals. For example, the digital set-top box described in item 5 of the scope of patent application, in which the digital wireless terrestrial broadcasting signal includes DVB-T terrestrial broadcasting. 7. Please refer to the digital set-top box described in item 4 of the patent scope. The digital wireless broadcast signal includes a digital wireless satellite broadcast signal. 8 · The digital machine as described in item 7 of the scope of patent application, wherein the digital wireless satellite broadcast signal includes DVB-S satellite broadcast 2 ', 9 · The digital machine as described in item 4 of the scope of patent application, beans The digital wireless broadcast signal includes ATSC digital broadcast. 1 eight
TW092129811A 2003-10-27 2003-10-27 Digital set-top box TWI236293B (en)

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TW092129811A TWI236293B (en) 2003-10-27 2003-10-27 Digital set-top box
US10/714,798 US20050114899A1 (en) 2003-10-27 2003-11-17 Digital set-top box
GB0327411A GB2407722B (en) 2003-10-27 2003-11-25 Digital set-top box

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GB2407722B (en) 2005-09-07

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